Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 607-234-8 | CAS number: 234446-82-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
With high probability not harmful to aquatic algae.
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 42.8 mg/L
Additional information
To describe the aquatic toxicity to green algae studies with three single EDTA metal complexes are available (FeEDTANa, CAS 15708-41-5; MnEDTANa2, CAS 15375-84-5; CoEDTANa2, CAS 15137-09-4). In some studies slight effects on the growth of the algae were determined. It is known that such effects can result from the interaction of the complexing agent (EDTA) with micronutrients of the culture medium. Hence, algae tests with complexing agents may yield apparent results under standardized guideline conditions that are more or less severe than the true toxicity (see Guidance on Hazard to the Aquatic Environment Globally Harmonized System GHS Annex 9 A9.3.3.4, 2007). To specify this impact a series of preliminary tests with enriched medium nutrients were conducted for MnEDTANa2 (CAS 15375-84-5) [Akzo Nobel, 2009]. Thus the final test was conducted with an adequate adjustment of the test medium. Ultimately it can be concluded that all three tested EDTA metal complexes show no considerable toxic effect to aquatic green algae. The lowest effect value is reported for the EDTA manganese complex with an 72-hours EC10 of 42.8 mg/L [Akzo Nobel, 2009].
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
